With mods you can replace everything from Mc, all parts of the body
Viewing post in 0.95.16 Update Released! comments
Yes, it is very likely that it will be possible to customize the MC in the future.
The game already has a based on to edit(Mod's) the MC, that is... There are already several plans for this.
It's all a matter of priorities, as now good is done the stay with will probably be in the refinement of the game.